(substitute hubitat.local with your hub's IP address, though that should also work if the mDNS name is the default)
That being said, it's not clear what all you've tried. Was it just networking configuration? Sharing what else may be helpful, as that's all I see mentioned. I'd also try a soft reset/restore, looking at app and device stats, past logs, and other general troubleshooting, too.
Can't access the url when it freezes. After I reboot the freeOSMemory is always around 1-2%. After reading other messages on the forum that is why I tried switching cables, newtwork switches, Static IP, Ethernet IP or DHCP connections to see if their were any changes to keep hub up
When the hub freezes it also will not accept any commands from Alexa
Ok, I beleive I found the issue with hub memory. After completing a backup and restore I had the same issue 2 days later.
So since the problem was only happening at night I turned off the daily backup at 2AM. Now the hub has been operating correctly for 10 days without an issue
This is a local backup and for the record my hub information
Hub Type: C-8
Ethernet Connection: Static IP
Backup Size: 755KB
Number of builting apps: 8
Number of apps: 41
Number of devices: 100
-- 42 Zigbee
-- 58 Zwave